Correction to Grist/TNC piece on coral bleaching

You found less coral bleaching on this expedition than you’d thought you would. How significant is that finding? Should we be less worried about coral bleaching than we were before?

Joanne Wilson: Coral bleaching occurs when water temperatures are warmer than normal — for example, during La Niña events like the one we experienced last year. The increasing frequency and intensity of these warming events is associated with climate change. Fortunately, during our expedition, water temperatures were within normal ranges, so corals on Misool reefs were not bleaching. But with bleaching events predicted to increase in the future, we are still vigilant and concerned about Raja Ampat’s reefs.